Elevator door lockout with extendable handle

Abstract

The elevator door lockout with extendable handle includes an elevator door lockout and an extendable handle. The elevator door lockout with extendable handle may be operable to prevent movement of a hoistway door of an elevator by wedging the elevator door lockout between a sill groove and the hoistway door. The elevator door lockout may be engaged by turning a threaded shaft of the extendable handle in a first rotational direction. The elevator door lockout may be disengaged by turning the threaded shaft in a second rotational direction. The extendable handle may be adapted to turn the threaded shaft by grasping and turning the top of the extendable handle without requiring a user to bend down.

What is claimed is: 
     
       1. An elevator door lockout with extendable handle, the elevator door lockout comprising:
 an elevator door lockout and an extendable handle; 
 wherein the elevator door lockout with extendable handle is operable to prevent movement of a hoistway door of an elevator by wedging the elevator door lockout between a sill groove and the hoistway door; 
 wherein the extendable handle is adapted to turn a threaded shaft by grasping and turning the top of the extendable handle without requiring a user to bend down; 
 wherein the elevator door lockout comprises a base bar and a pivot bar; 
 wherein the base bar is configured to fit into the sill groove of the elevator; 
 wherein the elevator door lockout is engaged by turning a threaded shaft of the extendable handle in a first rotational direction; 
 wherein the elevator door lockout is disengaged by turning the threaded shaft in a second rotational direction; 
 wherein the base bar width as measured from front to rear is less than the width of the sill groove as measured from front to rear. 
 
     
     
       2. The elevator door lockout with extendable handle according to  claim 1 
 wherein the pivot bar is located above the base bar; 
 wherein the base bar and the pivot bar are pivotably coupled via a hinge pin. 
 
     
     
       3. The elevator door lockout with extendable handle according to  claim 2 
 wherein the pivot bar comprises a door lift shoulder; 
 wherein the door lift shoulder is a downward-oriented notch located at the end of the pivot bar that is opposite the hinge pin; 
 wherein the elevator door lockout is positioned such that the door lift shoulder is located beneath the hoistway door. 
 
     
     
       4. The elevator door lockout with extendable handle according to  claim 3 
 wherein the pivot bar pivots at the hinge pin in order to press the door lift shoulder up against the bottom of the hoistway door. 
 
     
     
       5. The elevator door lockout with extendable handle according to  claim 4 
 wherein the pivot bar comprises a handle aperture; 
 wherein the handle aperture is a vertically-oriented threaded aperture located at a midpoint of the pivot bar. 
 
     
     
       6. The elevator door lockout with extendable handle according to  claim 5 
 wherein the threaded shaft passes through the handle aperture; 
 wherein the threaded shaft comprises a thread that is complementary to the threading of the handle aperture such that the threaded shaft screws into the handle aperture. 
 
     
     
       7. The elevator door lockout with extendable handle according to  claim 6 
 wherein the extendable handle comprises a plurality of telescoping sections, the threaded shaft, and a pivoting hand grip; 
 wherein the extendable handle is adapted for the user to rotate from a standing position in order to engage and disengage the elevator door lockout by pivoting the pivot bar. 
 
     
     
       8. The elevator door lockout with extendable handle according to  claim 7 
 wherein the plurality of telescoping sections are operable to lengthen and shorten the extendable handle to change the height of the pivoting hand grip; 
 wherein two adjacent sections of the plurality of telescoping sections are different diameters such that a lower section slides into and out of an upper section; 
 wherein the extendable handle is lengthened to a handle extended configuration by sliding the lower section out of the upper section; 
 wherein the extendable handle is shortened to a handle retracted configuration by sliding the lower section into the upper section. 
 
     
     
       9. The elevator door lockout with extendable handle according to  claim 8 
 wherein the threaded shaft is coupled to the bottom of the extendable handle. 
 
     
     
       10. The elevator door lockout with extendable handle according to  claim 9 
 wherein the threaded shaft is turned in the first rotational direction to screw the threaded shaft into the pivot bar and to press the bottom of the threaded shaft against the base bar; 
 wherein pressing the bottom of the threaded shaft against the base bar pushes the pivot bar away from the base bar thus pivoting the door lift shoulder upwards. 
 
     
     
       11. The elevator door lockout with extendable handle according to  claim 10 
 wherein the threaded shaft is turned in the second rotational direction to unscrew the threaded shaft from the pivot bar and to lift the bottom of the threaded shaft away the base bar; 
 wherein lifting the bottom of the threaded shaft away from the base bar allows the pivot bar to pivot towards the base bar thus pivoting the door lift shoulder downwards. 
 
     
     
       12. The elevator door lockout with extendable handle according to  claim 11 
 wherein the threaded shaft comprises an insertion limiter to limit the insert distance of the threaded shaft into the handle aperture of the pivot bar. 
 
     
     
       13. The elevator door lockout with extendable handle according to  claim 12 
 wherein the pivoting hand grip is located on the side of the extendable handle at the top of the extendable handle; 
 wherein the pivoting hand grip is adapted to aid the user in turning the extendable handle by providing leverage. 
 
     
     
       14. The elevator door lockout with extendable handle according to  claim 13 
 wherein the pivoting hand grip pivots between a grip lowered position and a grip raised position. 
 
     
     
       15. The elevator door lockout with extendable handle according to  claim 14 
 wherein the pivoting hand grip is operable as a lever for rotating the extendable handle while the pivoting hand grip is in the grip raised position. 
 
     
     
       16. The elevator door lockout with extendable handle according to  claim 15 
 wherein the extendable handle comprises a hanging loop located on the top of the extendable handle; 
 wherein the hanging loop is operable to store the elevator door lockout with extendable handle by suspending the elevator door lockout with extendable handle from a hook. 
 
     
     
       17. The elevator door lockout with extendable handle according to  claim 16 
 wherein the threaded shaft of the extendable handle is unscrewed from the handle aperture such that the extendable handle separates from the elevator door lockout.